From d851a5ed367faadb97a410a017f14097f986e277 Mon Sep 17 00:00:00 2001
From: RealZogger <49367953+RealZogger@users.noreply.github.com>
Date: Wed, 15 Jan 2020 22:17:14 +0000
Subject: [PATCH] Add clarifying comment for negative indices

---
 lib/sinon/proxy.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/sinon/proxy.js b/lib/sinon/proxy.js
index 28e7e86d3..7b7807aad 100644
--- a/lib/sinon/proxy.js
+++ b/lib/sinon/proxy.js
@@ -43,6 +43,7 @@ var proxyApi = {
     getCall: function getCall(index) {
         var i = index;
         if (i < 0) {
+            // Negative indices means counting backwards from the last call
             i += this.callCount;
         }
         if (i < 0 || i >= this.callCount) {